From 6c756c2dbee0f46ff1d7f13a5c994ce5e2ba9a31 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Tue, 5 Jul 2022 00:01:07 +0200
Subject: [PATCH] [dxvk] Add check whether graphics pipeline libraries can be
 used

---
 src/dxvk/dxvk_device.cpp | 9 +++++++++
 src/dxvk/dxvk_device.h   | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/src/dxvk/dxvk_device.cpp b/src/dxvk/dxvk_device.cpp
index 36d2563a7..49421bc85 100644
--- a/src/dxvk/dxvk_device.cpp
+++ b/src/dxvk/dxvk_device.cpp
@@ -41,6 +41,15 @@ namespace dxvk {
   }
 
 
+  bool DxvkDevice::canUseGraphicsPipelineLibrary() const {
+    // Without graphicsPipelineLibraryIndependentInterpolationDecoration, we
+    // cannot use this effectively in many games since no client API provides
+    // interpoation qualifiers in vertex shaders.
+    return m_features.extGraphicsPipelineLibrary.graphicsPipelineLibrary
+        && m_properties.extGraphicsPipelineLibrary.graphicsPipelineLibraryIndependentInterpolationDecoration;
+  }
+
+
   DxvkFramebufferSize DxvkDevice::getDefaultFramebufferSize() const {
     return DxvkFramebufferSize {
       m_properties.core.properties.limits.maxFramebufferWidth,
diff --git a/src/dxvk/dxvk_device.h b/src/dxvk/dxvk_device.h
index 65730cbd3..361640548 100644
--- a/src/dxvk/dxvk_device.h
+++ b/src/dxvk/dxvk_device.h
@@ -197,6 +197,12 @@ namespace dxvk {
      */
     bool isUnifiedMemoryArchitecture() const;
 
+    /**
+     * \brief Checks whether graphics pipeline libraries can be used
+     * \returns \c true if all required features are supported.
+     */
+    bool canUseGraphicsPipelineLibrary() const;
+
     /**
      * \brief Queries default framebuffer size
      * \returns Default framebuffer size